Draft-equalizer



(No Model.)

S. H'. TINSMAN. DRAFT EQUALIZBR.

No. 436,443. Patented Sept. 16, 1890.

fly, 2.

'm: Nonms PETERS co., mvvumm, wwnwmnn. a. c

UNITED STATES PATENT OFFICE.

SAMUEL H. TINSMAN, OF MORRIS, ILLINOIS.

DRAFT-EQUALIZER.

' SPECIFICATION forming part of Letters Patent No. 436,443, datedSeptember 16, 1890.

Application filed June 27, 1890. Serial No. 357,015. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL H. TINSMAN, a citizen of the United States ofAmerica, residing at Morris, in the county of Grundy and State ofIllinois, have invented certain new and useful Improvements inDraft-Equalizers, of which the following is a specification, referencebeing had therein to the accompanying drawings and the letters ofreference thereon, forming a part of this specification,in which--Figure 1 is a top plan View of the draftequalizer complete, and Fig. 2is a cross-sectional View through the pole and the slide thereon.

This invention relates to certain improvements in draft-equalizers,which improvements are fully set forth and explained in the followingspecification and claims.

Referring to the drawings, 13 represents a pole adapted for use on awagon or on any machine where it is desirable to use such devlce.

A is a box slide sleeved on said pole, and is adapted to be adjustablethereon, and may be held adjusted by means of a pin V passing through itand one of the row of pin-holes c in the pole.

E is a doubletree pivoted in the ordinary manner ata point aboutone-third of its length from one end to the pole B, and is provided atthe outer end of its longest section with a friction-wheel P, and at itsopposite end with a doubletree R, attached thereto at about one-thirdits length from one end in the ordinary manner, its longest sectionextending over the pole and provided with a frictionwheel P, over whichchain D passes, said chain being attached at one end to the outer end ofthe shortest section of doubletree E and to a whiffietree a at itsopposite end.

D is a chain having one end connected to said slide A by means of anintegral eye 7. The opposite end of said chain D passes over saidfriction-wheel P in the end of said doubletree E and attaches to adoubletree R, having ordinary whiffletrees a. The device, as shown, isadapted to be used with four horses; but when the slide A and chain Dare adjusted at a point nearer the rear side of the doubletree E, asshown in broken lines, less power can be applied to doubletree R byattaching less whifflletrees and horses thereto to balance the powerapplied to the doubletree R, as in such case the angle between chain Dand doubletree E is more acute and less power is required to balance thestrength of horses attached to doubletree R and prevent friction-wheel Pfrom traversing rearward on said chain, so that by adjusting slide A onpole B with chain D the device may be adapted to use with a greater orless number of horses, and said slide furnishes means for immediateadjustment for the purpose of balancing the strength of the horses ateither end of doubletree E, should anybecome weak and lose theirstrength. By this construction a variable number of horses may be usedsimply by moving said slide to change the angle between said doubletreeE and chain D. The use of chain D and friction-wheel P indoubletree Rpermits the longer section of said doubletree to extend over the pole,so that one of the horses attached to said doubletree may be on theopposite side of the pole, the angle of the chain D being such as tocause the power of a horse at the end of said chain D to be balanced bythe power of the horse attached to the shorter section of saiddoubletree. The angle of said chain D and doubletree B may be changed tosuit the power of either horse simply by pivoting said doubletree ateither side of the point shown to doubletree E. The whole forms a veryneat, simple, and effective draft-equalizer adapted particularly for useon a reaper, plow, mowing machine, and where a variable number of horsesis desired to be used. By the construction shown only one horse need beon the side of the pole next the grain when used on a reaper or mower,or in the furrow when used with a plow, and none need travel onjtheplowed ground, even if more than four horses are used.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is as follows, to wit:

1. The combination of pole B, having pinholes c, doubletree E, havingthe frictionwheel P, box-slide A, chain D, having one end attached tosaid slide and its opposite end passing over said friction-wheel andattached friction-Wheel P, and doubletree'R, substanto a doubletree,substantially as and for the tially as and for the purpose set forth.purpose set forth.

2. Thedraft-equalizershownanddescribed, SAMUEL H. TINSMAN. 5 consistingof the combination of the pole B, Witnesses:

slide A, chains D and D, doubletree E, hav- THOS. H. HUTCHINS, ingfriction-wheel P, doubletree R, having S. P. AVERY.

